parse \ before ... in for loop

Author: lte2000

src/com/millennialmedia/intellibot/psi/RobotLexer.java

@@ -415,18 +415,38 @@ private boolean isEllipsis(int position) {
         while (position < this.endOffset && (isWhitespace(position) || isNewLine(position))) {
             position++;
         }
+        // support "..." in FOR loop body that begin with "\"
+        //TODO: should there be superspace before "\"?
+        if (isBackslash(position)) {
+            position++;
+            // between "\" and "...", at least one superspace
+            if (!isSuperSpace(position)) {
+                return false;
+            }
+            while (position < this.endOffset && (isWhitespace(position) || isNewLine(position))) {
+                position++;
+            }
+        }
         return charAtEquals(position, '.') &&
                 charAtEquals(position + 1, '.') &&
                 charAtEquals(position + 2, '.') &&
                 isSuperSpaceOrNewline(position + 3);
     }
 
     private boolean isOnlyWhitespaceToPreviousLine(int position) {
-        // TODO: "..." in FOR loop body that begin with "\"
+        // support "..." in FOR loop body that begin with "\"
+        boolean have_backslash = false;
         while (position >= 0 && !isNewLine(position)) {
-            if (!isWhitespace(position)) {
+            if (!isWhitespace(position) && !isBackslash((position))) {
                 return false;
             }
+            if (isBackslash(position)) {
+                if (have_backslash || !isSuperSpace(position+1)) {
+                    return false;
+                }
+                have_backslash = true;
+            }
+            //TODO: should there be superspace before "\"?
             position--;
         }
         return true;
@@ -565,4 +585,8 @@ private boolean lookAheadForLoop() {
             return false;
         }
     }
+
+    private boolean isBackslash(int position) {
+        return position < this.endOffset && this.buffer.charAt(position) == '\\';
+    }
 }